CN203584048U - Padlock device - Google Patents
Padlock device Download PDFInfo
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- CN203584048U CN203584048U CN201320685351.1U CN201320685351U CN203584048U CN 203584048 U CN203584048 U CN 203584048U CN 201320685351 U CN201320685351 U CN 201320685351U CN 203584048 U CN203584048 U CN 203584048U
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- padlock
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- key
- padlock device
- control circuit
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 53
- 229910052742 iron Inorganic materials 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 6
- 238000012795 verification Methods 0.000 description 33
- 230000009471 action Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model relates to the field of high-voltage switching cabinets, in particular to a padlock device. The padlock device comprises a padlock body and further comprises a linkage mechanism, a linkage driver and a control circuit all of which are located in the padlock body. The padlock body is provided with a key interface used for receiving paired information or unlocking order information sent by an electronic key and sending the information to the control circuit so that the electronic pairing with external related electricity verifying devices can be achieved, the linkage mechanism can be driven to work through the control circuit and the linkage driver, and unlocking of the padlock device is achieved. Due to the matching of the key interface and the electronic key, the information can be accurately transmitted, using is safe and reliable, the padlock device is independent from the high-voltage switching cabinets and does not need to be installed on the high-voltage switching cabinets, and using is convenient.
Description
Technical field
The utility model relates to high-tension switch cabinet field, relates in particular to a kind of padlock device.
Background technology
At present, in industrial production, electric five anti-referring to: prevent from dividing by mistake, closing by mistake line breaker, on-load switch, contactor; Prevent that on-load from dividing, closing isolating switch; Prevent from closing earthing switch in charged mistiming; Prevent from closing when earthing switch is in the close position line breaker, on-load switch; Prevent mistakenly entering into charged chamber.The electric five anti-high-tension switch cabinets that require are to open cabinet door in the situation that of electrification in high voltage, and necessary forced blocking, prevents maloperation.So, before unblanking, need first electrical verification.
In order to meet above-mentioned requirements, existing conventional design is that electroscopic device and unlocking apparatus are installed on cabinet door, to realize electrical verification, unblank, for example, electrification display and electromagnetic lock are installed in prior art on cabinet door, respectively as electroscopic device and unlocking apparatus, on high-voltage line in high-tension switch cabinet, high pressure sensor is set, by high pressure converted, it is low-voltage signal, by electrification display, show electrification in high voltage situation, then artificially according to having or not high pressure to determine whether, allow to open electromagnetic lock, the power supply of the electromagnetic lock of use is taken from potential transformer (PT) power supply.
But, in prior art, tend to occur that electrification display is because of fault is not lit and electromagnetic lock is not powered situation, if at this moment unblank by force, opening door operation has very large potential safety hazard, so use existing electromagnetic lock still to have potential safety hazard, it is unreliable to use, and existing electromagnetic lock structure complexity, need to be in cabinet doorway location and installation, use inconvenient.At present, electronic lock and have information and read and the appearance of the electron key of transfer function, realizes safety and precise ground unlocking tool to high-tension switch cabinet significant.
Therefore,, for above deficiency, the utility model provides a kind of padlock device.
Utility model content
(1) technical problem that will solve
The purpose of this utility model is to provide a kind of padlock device safe and reliable, easy to use.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of padlock device, link gear, linkage driving device and control circuit that it comprises lock body and is arranged in lock body; Control circuit is connected with the key interface on linkage driving device and lock body respectively, key interface matches with electron key, for receiving unpaired message or the unlock instruction information that electron key transmits, linkage driving device and link gear match, for driving link gear to unblank.
Wherein, linkage driving device is magnet driver.
Wherein, link gear comprises U-shape sword iron and STATEMENT OF FEDERALLY SPONSORED; The free end of U-shape sword iron matches with the lockhole of lock body, and it is recessed that the link of U-shape sword iron has screens, and is arranged in lock body; Recessed the matching of screens of the screens end of STATEMENT OF FEDERALLY SPONSORED and U-shape sword iron link, realizes the screens to U-shape sword iron, and STATEMENT OF FEDERALLY SPONSORED matches with magnet driver.
Wherein, in STATEMENT OF FEDERALLY SPONSORED, have interlock block, magnet driver is positioned at the side of interlock block near screens end, recessed for STATEMENT OF FEDERALLY SPONSORED is released to screens, interlock block is provided with release link away from screens end one side, and this release link is for advancing screens recessed at the screens end of STATEMENT OF FEDERALLY SPONSORED.
Wherein, screens is recessed is groove or annular recesses.
Wherein, the below of U-shape sword iron link is connected with elastic component.
Wherein, elastic component is spring.
Wherein, interlock block is provided with travel switch away from a side of screens end, and the trip switch is connected with control circuit, for unlocking condition information or blocking information are fed back to control circuit.
Wherein, control circuit comprises the padlock control module and the booster circuit module that are connected, and booster circuit module is connected with linkage driving device, and padlock control module is connected with key interface.
The utility model also provides a kind of high-tension switch cabinet on the other hand, and it has above-mentioned padlock device.
(3) beneficial effect
Technique scheme tool of the present utility model has the following advantages: on the lock body of the padlock device that the utility model provides, key interface is set, for receiving unpaired message or the unlock instruction information that electron key transmits, then this information is sent to control circuit, can realize the electron pairing of the electroscopic device that is associated with outside, and by control circuit and linkage driving device, can drive link gear action, realize unblanking of padlock device, by key interface, match with electron key, can complete the accurate transmission of information, safe and reliable, and this padlock device is independent of high-tension switch cabinet, need not be arranged on high-voltage switch gear cashier's office in a shop, easy to use.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the utility model embodiment high voltage switch cabinet electricity check unlocking system;
Fig. 2 is the parts annexation figure of electroscopic device in the utility model embodiment;
Fig. 3 is the parts annexation figure of electron key in the utility model embodiment;
Fig. 4 is the structural relation figure of padlock device in the utility model embodiment.
In figure, 1: high pressure sensor; 2: electroscopic device; 3: electron key; 4: padlock device; 21: electrical verification interface; 31: electrical verification joint; 32: display lamp; 33: charging inlet; 40: STATEMENT OF FEDERALLY SPONSORED; 41: key interface; 42: lock body; 43: release link; 44: interlock block; 45: travel switch; 46: Self-retaining electromagnet; 47: back-moving spring; 48: control circuit; 49:U shape locking bar.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, the high voltage switch cabinet electricity check unlocking system that the utility model embodiment provides comprises high pressure sensor 1, electroscopic device 2, electron key 3 and padlock device 4, high pressure sensor 1 is arranged on the power line in high-tension switch cabinet, high pressure sensor 1 adopts cover tube sensor, electroscopic device 2 is connected with high pressure sensor 1, the electrical verification joint 31 of electron key 3 matches with the electrical verification interface 21 of electroscopic device 2, for reading the unpaired message of electroscopic device 2 and receiving the information of unblanking that electroscopic device 2 transmits, the electrical verification joint 31 of electron key 3 matches with the key interface 41 of padlock device 4, for unpaired message and the information of unblanking are passed to padlock device 4, in figure, dotted line represents matching relationship.
Wherein, electroscopic device 2 can obtain the whether charged information of high-tension switch cabinet mesohigh electric wire by high pressure sensor 1, and then can judge whether to unblank, electron key 3 matches with electroscopic device 2 and padlock device 4 respectively, on the one hand, can read the information coding (being unpaired message) of electroscopic device 2, then insert padlock device 4, realize any pairing of electroscopic device 2 and padlock device 4, on the other hand, electroscopic device 2 and padlock device 4 complete after pairing, electron key 3 is inserted to electroscopic device 2 to carry out after communication checking, electron key 3 can be by the unlock instruction information that receives electroscopic device 2 and transmit, when in high voltage power distributing cabinet during without high pressure, electron key 3 is obtained unlock instruction, then electron key 3 being inserted to padlock carries out after communication checking, realization is unblanked, when having high pressure in high voltage power distributing cabinet, electron key 3 can not receive unlock instruction, unblanks to stop.
Particularly, as shown in Figure 2, electroscopic device 2 comprises the reduction voltage circuit module, rectifying and voltage-stabilizing module, electrical verification control module and the electrical verification interface 21 that connect successively, and reduction voltage circuit module is connected with high pressure sensor 1, and electrical verification interface 21 matches with electron key 3.Wherein, rectifying and voltage-stabilizing module is one group of rectifier bridge and the Zener diode being connected, and this group rectifier bridge and Zener diode are as sampling output circuit, and the low and high level of its output can be used as the sampling of electrical verification control module and uses; Electrical verification control module is MCU controller, it adopts XX32 position single-chip microcomputer, it can obtain charged information accurately and reliably from sampling output circuit, the information that can input electron key 3 by this electrical verification control module is carried out data check, the power supply that the Power supply of MCU controller carries from electron key 3 need to not installed PT power supply in high voltage power distributing cabinet; Electrical verification interface 21 is the aviation plug of 4 cores, by this aviation interface and electron key 3, matches, and between electrical verification control module and electron key 3, can carry out communication and exchanges data transmission.
Particularly, as shown in Figure 3, electron key 3 comprises the charging module, power module, key control module and the electrical verification joint 31 that connect successively, when electrical verification, electrical verification joint 31 matches with the electrical verification interface 21 of electroscopic device 2, and key control module comprises pairing control module reconciliation lock control unit, be respectively used to realize matching function and electrical verification unlocking function, preferably, pairing control module is connected with pairing button, and release control module is connected with unlock button.Power module adopts the chargeable lithium battery power supply of 4.2V, and charging inlet 33 adopts the general micro USB mouth in market, and this power module can be the electrical verification control module of electroscopic device 2 and the control circuit 48 of padlock device 4 provides power supply; Charging module adopts conventional charging circuit; Key control module adopts the single-chip microcomputer of STC15F1004 as main control circuit 48; Electrical verification joint 31 adopts Aviation Connector, and it can be connected with the aviation interface of electroscopic device 2.Key control module matches by the electrical verification interface 21 of electrical verification joint 31 and electroscopic device 2, can read on the one hand the information coding of electroscopic device 2, then insert padlock device 4, realize the pairing of electroscopic device 2 and padlock device 4, on the other hand, can carry out communication checking with electroscopic device 2, obtain unlock instruction.
Certainly, the matching function of electron key 3 and electrical verification unlocking function can be respectively realized by two independent keys, and like this, electron key 3 just comprises two kinds of pairing key and unlock keys, key control module in pairing key only includes pairing control module, realizes matching function; Key control module in unlock key only includes release control module, realizes electrical verification unlocking function.
Preferably, electron key 3 also comprises display module and alarm modules, display module, alarm modules is all connected with key control module, display module comprises two green LEDs and the emitting red light diode that are arranged on electron key 3 inside, it shows and uses as state, two green LEDs and emitting red light diode are as display lamp 32, two green LEDs are respectively as the first green light and the second green light, the first green light is connected to pairing control module, the second green light is connected to release control module, emitting red light diode is as red light, alarm modules is a buzzer that is arranged on electron key 3 inside, and it is reported to the police and use as alarm condition, and when having high pressure in high-tension switch cabinet, alarm sound, when electron key 3 operation failure, has Tip Sound.When inserting electroscopic device 2, reads after coded message success electron key 3 the first green light flicker; When electron key 3 inserts after padlock device 4 successful matchings, the first green light flicker; When in high-tension switch cabinet during without high pressure, electron key 3 inserts electroscopic device 2, obtains after unlock instruction, and the second green light is lighted; When electron key 3 inserts unlocking apparatus, unblank successfully, the second green light flicker; When having high pressure in high-tension switch cabinet, electron key 3 inserts electroscopic device 2, blinking red lamp, meanwhile, alarm sound.
Further, as shown in Figure 4, in high-tension switch cabinet unlocking system, padlock device 4 in the utility model is used as unlocking apparatus, link gear, magnet driver (as the driver of link gear), control circuit 48 and key interface 41 that it comprises lock body 42 and is arranged in lock body 42; Control circuit 48 is connected with magnet driver and key interface 41 respectively, and key interface 41 matches with electron key 3; Magnet driver and link gear match to drive link gear to unblank.Wherein, magnet driver is Self-retaining electromagnet 46, electron key 3 inserts the key interface 41 of padlock device 4, the control circuit 48 that unlock instruction is delivered to padlock device 4, control circuit 48 is controlled magnet driver, the electromagnet action of magnet driver, touch link gear, link gear work, padlock device 4 is opened, and realizes release.
When the key control module of electron key comprises pairing control module, when electron key is inserted to the key interface of padlock device, padlock device also can be realized the electron pairing with electroscopic device.
Like this, on the lock body of padlock device, key interface is set, for receiving unpaired message or the unlock instruction information that electron key transmits, then this information is sent to control circuit, can realize on the one hand the electron pairing with electroscopic device, realize on the other hand unblanking of padlock device, padlock device connects without the need for line, by key interface, match with electron key, can complete the transmission of information, safe and reliable, and this padlock device is independent of high-tension switch cabinet, need not be arranged on high-voltage switch gear cashier's office in a shop, easy to use.
Particularly, link gear comprises U-shape sword iron 49, is arranged in STATEMENT OF FEDERALLY SPONSORED 40, elastic component and the release link 43 of lock body 42; The free end of U-shape sword iron 49 matches with the lockhole of lock body 42, it is recessed that the link of U-shape sword iron 49 has screens, and be arranged in lock body 42, and this screens is recessed is an annular recesses of U-shape sword iron 49 links, the below of link is connected with elastic component, and elastic component is back-moving spring 47; Recessed the matching of screens of the screens end of STATEMENT OF FEDERALLY SPONSORED 40 and U-shape sword iron 49 links, the screens of realization to U-shape sword iron 49, in STATEMENT OF FEDERALLY SPONSORED 40, there is interlock block 44, magnet driver is positioned at the side of interlock block 44 near screens end, it is recessed for STATEMENT OF FEDERALLY SPONSORED 40 is released to screens, release link 43 is positioned at interlock block 44 away from screens end one side, for advancing screens recessed at the screens end of STATEMENT OF FEDERALLY SPONSORED, interlock block 44 is provided with travel switch 45 away from screens end one side, and the trip switch 45 is connected with control circuit 48.Padlock device 4 adopts the driver of Self-retaining electromagnet 46 as link gear, there is no power consumption after locking.
Under the control of control circuit 48, Self-retaining electromagnet 46 promotes interlock block 44 and is moved to the left, it is recessed that the screens end of STATEMENT OF FEDERALLY SPONSORED 40 is pushed out the screens of U-shape sword iron 49 links, under the ejection effect of the elastic component of U-shape sword iron 49 below its link, move up, and then U-shape sword iron 49 free ends eject lockhole, realized unlocking action, simultaneously, travel switch 45 moves left and touches travel switch 45, because travel switch 45 is connected with control circuit 48, control circuit 48 obtains the information of unblanking, and the whole process of unblanking finishes; U-shape sword iron 49 is pressed, press in release link 43 simultaneously, release link 43 promotes interlock block 44 and moves right, electromagnet is subject to inner permanent magnetic effect to keep adhesive, and it is recessed that the screens end of STATEMENT OF FEDERALLY SPONSORED 40 enters the screens of U-shape sword iron 49 links, realizes locking, simultaneously, travel switch 45 disconnects, and control circuit 48 is passed in out code, and whole locking process finishes.
The course of work of the pairing of the utility model embodiment high voltage switch cabinet electricity check unlocking system and electrical verification release is:
1, electron key 3 inserts the electrical verification interface 21 of electroscopic device 2, press pairing button, now the electrical verification control module of electroscopic device 2 inside is powered by electron key 3, electrical verification control module is started working, the pairing control module of the inner key control module of electron key 3 reads the information coding of the inner electrical verification control module of electroscopic device 2, the first green light flicker, illustrates and reads successfully, takes off the rear green light Chang Liang of electron key 3; Description operation failure while having prompt tone, needs to repeat above action.
2, read successful electron key 3 and insert the key interface 41 of padlock device 4, again press pairing button, now the first green light flicker, illustrates successful matching, takes off the first green light Chang Liang after key; Description operation failure while having prompt tone, needs to repeat above action.When high-voltage switch gear has manyly during padlock device 4 cashier's office in a shop, can many padlock device 4 be matched to this.
3, electron key 3 is inserted into the electrical verification interface 21 of electroscopic device 2, press unlock button, electron key 3 and electroscopic device 2 carry out communication checking, during without high pressure, electron key 3 receives not charged information (information of unblanking) in high-tension switch cabinet, and the second green light is lighted, electron key 3 is inserted to the key interface 41 of padlock device 4, press unlock button, the second green light flicker, unblanks successfully; During padlock device 4 locking, need under electron key 3 connection status, press U-shape sword iron 49, the second green light Chang Liang, when not connecting key and carrying out lock operation, electron key 3 has alarm; Description operation failure when aforesaid operations has prompt tone, needs to repeat above action;
4,, when high-tension switch cabinet inner high voltage has electricity, electron key 3 alarm sounds, unblank to stop.When high-voltage switch gear arranges manyly in the situation of padlock device 4 cashier's office in a shop, now with electron key 3, operating any one all can have alarm sound padlock device 4, and padlock device 4 can not be opened.
In sum, in the high voltage switch cabinet electricity check unlocking system that the utility model embodiment provides, the whether charged information of power line by electroscopic device 2, can be detected, and then can judge whether to unblank, by 3 of electron keys, can realize electroscopic device 2 and padlock device 4 matches, then by electron key 3, the information of unblanking can be passed to padlock device 4 by electroscopic device 2, realize the release of padlock device 4; By the power module in electron key 3, can be the electrical verification control module of electroscopic device 2 and the control circuit 48 of padlock device 4 provides power supply, do not need provides power supply separately in electroscopic device 2 and padlock device 4; On the lock body of padlock device 4, key interface is set, for receiving unpaired message or the unlock instruction information that electron key 3 transmits, then this information is sent to control circuit, can realize and the electron pairing of electroscopic device, also can realize unblanking of padlock device 4, padlock device 4 connects without the need for line, safe and reliable, and this padlock device 4 is independent of high-tension switch cabinet, need not be arranged on high-voltage switch gear cashier's office in a shop, easy to use.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (10)
1. a padlock device, is characterized in that: it comprises lock body (42) and is arranged in the link gear of lock body (42), linkage driving device and control circuit (48); Control circuit (48) is connected with the key interface (41) on linkage driving device and lock body (42) respectively, key interface (41) matches with electron key (3), be used for receiving unpaired message or the unlock instruction information that electron key (3) transmits, linkage driving device and link gear match, for driving link gear to unblank.
2. padlock device according to claim 1, is characterized in that: linkage driving device is magnet driver.
3. padlock device according to claim 2, is characterized in that: link gear comprises U-shape sword iron (49) and STATEMENT OF FEDERALLY SPONSORED (40); The free end of U-shape sword iron (49) matches with the lockhole of lock body (42), and it is recessed that the link of U-shape sword iron (49) has screens, and is arranged in lock body (42); Recessed the matching of screens of the screens end of STATEMENT OF FEDERALLY SPONSORED (40) and U-shape sword iron (49) link, realizes the screens to U-shape sword iron (49), and STATEMENT OF FEDERALLY SPONSORED (40) matches with magnet driver.
4. padlock device according to claim 3, it is characterized in that: in STATEMENT OF FEDERALLY SPONSORED (40), there is interlock block (44), magnet driver is positioned at the side of interlock block (44) near screens end, it is recessed for STATEMENT OF FEDERALLY SPONSORED (40) is released to screens, interlock block (44) is provided with release link (43) away from screens end one side, and this release link (43) is for advancing screens recessed at the screens end of STATEMENT OF FEDERALLY SPONSORED (40).
5. padlock device according to claim 4, is characterized in that: screens is recessed is groove or annular recesses.
6. padlock device according to claim 4, is characterized in that: the below of U-shape sword iron (49) link is connected with elastic component.
7. padlock device according to claim 6, is characterized in that: elastic component is spring.
8. padlock device according to claim 4, it is characterized in that: interlock block (44) is provided with travel switch (45) away from a side of screens end, the trip switch (45) is connected with control circuit (48), for unlocking condition information or blocking information are fed back to control circuit (48).
9. according to the padlock device described in claim 1-8 any one, it is characterized in that: control circuit (48) comprises the padlock control module and the booster circuit module that are connected, booster circuit module is connected with linkage driving device, and padlock control module is connected with key interface (41).
10. a high-tension switch cabinet, it has the padlock device described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320685351.1U CN203584048U (en) | 2013-10-31 | 2013-10-31 | Padlock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320685351.1U CN203584048U (en) | 2013-10-31 | 2013-10-31 | Padlock device |
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| Publication Number | Publication Date |
|---|---|
| CN203584048U true CN203584048U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320685351.1U Expired - Lifetime CN203584048U (en) | 2013-10-31 | 2013-10-31 | Padlock device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203584048U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556881A (en) * | 2013-10-31 | 2014-02-05 | 北京微能汇通电力技术有限公司 | Ring latch device |
| CN108316786A (en) * | 2018-04-10 | 2018-07-24 | 中物联（天津）科技发展有限公司 | A kind of Internet of Things padlock and padlock system based on LoRa |
| CN109209064A (en) * | 2018-09-25 | 2019-01-15 | 邓小干 | A kind of portable intelligent fingerprint-based padlock |
-
2013
- 2013-10-31 CN CN201320685351.1U patent/CN203584048U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556881A (en) * | 2013-10-31 | 2014-02-05 | 北京微能汇通电力技术有限公司 | Ring latch device |
| CN103556881B (en) * | 2013-10-31 | 2017-01-11 | 北京微能汇通电力技术有限公司 | Ring latch device |
| CN108316786A (en) * | 2018-04-10 | 2018-07-24 | 中物联（天津）科技发展有限公司 | A kind of Internet of Things padlock and padlock system based on LoRa |
| CN109209064A (en) * | 2018-09-25 | 2019-01-15 | 邓小干 | A kind of portable intelligent fingerprint-based padlock |
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Granted publication date: 20140507 |
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